Certification. The production base of Ruanfeng Research Society's sanitary napkins is one of the largest sanitary napkin manufacturers in China: Nuoer Group. Starting in 2012, it established an expert R&D team of more than 20 people. It took 6 years to finally develop the wet one-piece molding technology, obtained a national patent. Since then, domestically produced sanitary napkins have finally had their own core technology, and have been recognized by the country in terms of technology and safety index. Ruanfeng Research Institute is a "product-driven" female care technology company that focuses on creating female care products and is committed to using innovative technology and high-end materials to allow more Chinese women to use safe, high-quality, and cost-effective products. Sanitary napkin products.